Marchitó is the past tense of the verb marchitar, meaning 'to wither' or 'to fade away'. It’s a beautifully melancholic word you won't hear in everyday conversation.
In this iconic song, Selena creates a powerful metaphor comparing the love she was given to a flower. She sings, "Como la flor... se marchitó" (Like the flower... it withered), perfectly capturing the heartbreaking feeling of a beautiful love that has sadly faded and died.
This is a classic breakup song, but it's one with a lot of class. The singer knows her ex has found someone new, and she tries to be the bigger person, saying, "Yo sé que tienes un nuevo amor / Sin embargo, te deseo lo mejor" (I know you have a new love / However, I wish you the best). It's all very mature and understanding on the surface. But the real feeling comes through in the song's main image: "Como la flor con tanto amor / Me diste tú, se marchitó" (Like the flower with so much love / You gave me, it withered). The love they shared was beautiful, but now it's gone.
Despite her graceful words, the pain is overwhelming. She keeps repeating, "Ay, cómo me duele" (Oh, how it hurts me). She accepts the loss, saying "yo sé perder" (I know how to lose), but then immediately admits how devastating it is. She feels completely empty, telling her ex, "Con tu adiós te llevas mi corazón" (With your goodbye, you take my heart) and wondering if she can ever love again because she gave this person everything she had.